// ajax请求函数模块
import axios from 'axios'
export default function ajax(url, data = {}, type = "GET") {

    return new Promise(function (resolve, reject) {
        // 执行异步ajax请求
        let promise
        if (type === 'GET') {
            // 准备url query 参数数据
            let dataStr = '' //数据拼接字符串
            Object.keys(data).forEach(key => {
                dataStr += key + '=' + data[key] + '&'
            })
            if (dataStr !== '') {
                dataStr = dataStr.substring(0, dataStr.lastIndexOf('&'))
                url = url + '?' + dataStr
            }
            // 发送get 请求
            promise = axios.get(url)
        } else {
            // 发送post 请求
            promise = axios.post(url, data)
        }
        promise.then(function(response){
            // 成功了调用resolve()
            resolve(response.data)
        }).catch(function(error){
            // 失败了调用reject()
            reject(error)
        })
    })



    return promise
}